the boston marathon bombers as brothers, tamerlananddzhokhartsarnaev. theyare from a predominantly muslim region in russia. the 19-year-old brother believed to be extremely dangerous possibly armed with explosives on his person. unclear whether he was injured in the shoot outlast night in which his 26-year-old brother died. it's unclear whether he's injured and hiding somewhere and unable to move, whether he moved, they don't know right now. we're told that the brother was wearing explosives and a triggering device when he died which is why they're worried -- >> the older brother. >> the older brother. this is why they're worried the younger brother could be in a similar situation. this happened overnight and intensified. police say the suspects robbed a convenience store, shot and killed an m.i.t. police officer. i was on the air live when that happened last night, wolf. and as you know, it was no expectation at that time that there was any relation between the two things. but there ended up being. >> and when they heard of a convenience store robbery, stuff like that happens. >> right.

of a jihadist mentality. the 19-year-old, the one who is stillalive,dzhokhartsarnaev, seemsto have been less, i think ideologic ideological, if you will. based on the evidence that we have. and i wonder, frank, there's this idea of mercy in american society. and the "boston herald" in today's paper writes we know he's 19 years old, we don't think he has a criminal record. there are a lot of people out there who seem to have warm, positive things to say about him. to predict he'll get a life sentence is not unreasonable. there are democrats who have said, republicans and democrats who have called for capital punishment in this case. there's a question of whether giving him a lesser sentence, if he does cooperate with authorities, given who he is and how young he is. >> the lesser sentence being life. >> life isn't much of a lesser sentence. it's a pretty satisfying punishment. you know, there's nothing that we can ever do that will, that will make us feel any better about what happened. death penalty versus life -- those are very serious, very, very serious punishments. and you know, there's

the suspect might be. the suspect who we're looking -- who they're looking for isnameddzhokhartsarnaev. thisis his picture. dzhokhar tsarnaev. he is originally of chechen origin. he's lived here quite a long time. he and his brother came here many, many years ago. his brother, tamerlan, with the same last name, he was killed overnight in the shootout we've been talking about with police that john miller just laid out for us in watertown. so they have not found the younger brother yet. he is believed to be heavily armed, perhaps carrying explosives. he's obviously proven to be dangerous. and right now there is just a full-court press trying to find out where he is because until they can neutralize him, there is a potential that the threat goes forward because we don't know what else, if anything, he might have planned or have been up to. and also at the same time, on another channel, investigators are trying to find out if these two brothers were simply working together as a small two-man cell or if they were working with something larger. at this point we have no evidence of anyone el

with the capture of19-year-olddzhokhartsarnaev. theolder brother tamerlan was killed thursday night in a gun battle with police. let's get the latest from don dahler in watertown. good morning, don. >> reporter: good morning, anthony. it was a week marked with inoh verdict victims and violence that marked one of the largest manhunts in this history culminating at a house you see through the trees back there. but as you said late last night the commissioner said the bostonians can finally breathe a sigh of relief. the first indication that the search might be over the round of applause that erupted at the scene. moments later the ambulance pulled away carrying a wounded dzhokhar tsarnaev with serious wounds to his leg and neck. >> we're exhausted folks but we have a victory here tonight. >> reporter: it was the culmination of a wild 27 hours when the fbi released photos of dzhokhar and tamerlan. at the time they were only known as suspect 1 and suspect 2. >> officer down. they're working it. they're working it. they're trying to get them there. >> reporter: by thursd

. police cornered19-year-olddzhokhartsarnaevina two-hour standoff. he was hiding in a boat in the backtown of a watertown home. he had been shot, he lost a lot of blood. this morning he is in a boston area hospital. at last check he was listed in serious condition. after his capture, massachusetts governor deval patrick and authorities praised police efforts and the community's cooperation. >> it was a very, very complicated case, a very challenging case, and there are still some questions remaining to be answered. but as the colonel said, because of that extraordinary collaboration and cooperation by all of these law enforcement resources and assets and more to the point people, professionals, who brought their "a" game, we have a suspect in custody tonight. >> the community stood strong. it was a call from a resident in watertown. we asked you to remain vigilant, and you did. we got that call and we got the guy. and so we can't thank you enough. you've done everything and more than we've asked. extremely proud of law enforcement today and what we've accomplished. >> this

, the one they are still trying to findnow,dzhokhartsarnaevwasborn in kyrgyzstan. his family lives in russia and we're told his father was a public official there at one time. the reason we're told for this extraordinary security in the area of watertown is, of course, because they still don't know where the other of the two brothers, the second bomber is located. they think they know where he is. they believe that's the place they have surrounded and where you just saw kerry sanders reporting but there's a further concern that these two brothers may have had af coccomplices an authorities found another bomb in boston. a device in the charles gate area. they rendered it safe but they are concerned there maybe accomplices. they can't be certain of it. but there's a concern there maybe accomplices at large. you put all of those factors together, and we're told that's the reason for the extraordinary security. there's been a report that one accomplice tried to escape on a train to connecticut. that the train was stopped. we believe now that this is not the case. savannah? >> pete will